CVE-2026-40310
MEDIUM
ImageMagick has a heap out-of-bounds write in JP2 encoder
Published April 14, 2026Updated April 21, 2026Source: osv
Summary
Heap out-of-bounds write in the JP2 encoder with when a user specifies an invalid sampling index.
Remediation
Upgrade to the fixed version using your package manager.
NuGet
Update Magick.NET-Q8-arm64 to 14.12.0 or laterdotnet add package Magick.NET-Q8-arm64 --version 14.12.0
NuGet
Update Magick.NET-Q16-OpenMP-x64 to 14.12.0 or laterdotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.12.0
NuGet
Update Magick.NET-Q16-OpenMP-arm64 to 14.12.0 or laterdotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.12.0
NuGet
Update Magick.NET-Q8-OpenMP-x64 to 14.12.0 or laterdotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.12.0
NuGet
Update Magick.NET-Q8-x64 to 14.12.0 or laterdotnet add package Magick.NET-Q8-x64 --version 14.12.0
NuGet
Update Magick.NET-Q8-OpenMP-arm64 to 14.12.0 or laterdotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.12.0
NuGet
Update Magick.NET-Q16-x64 to 14.12.0 or laterdotnet add package Magick.NET-Q16-x64 --version 14.12.0
NuGet
Update Magick.NET-Q16-HDRI-AnyCPU to 14.12.0 or laterdotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.12.0
NuGet
Update Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.12.0 or laterdotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.12.0
NuGet
Update Magick.NET-Q16-arm64 to 14.12.0 or laterdotnet add package Magick.NET-Q16-arm64 --version 14.12.0
NuGet
Update Magick.NET-Q16-HDRI-x86 to 14.12.0 or laterdotnet add package Magick.NET-Q16-HDRI-x86 --version 14.12.0
NuGet
Update Magick.NET-Q16-x86 to 14.12.0 or laterdotnet add package Magick.NET-Q16-x86 --version 14.12.0
NuGet
Update Magick.NET-Q16-AnyCPU to 14.12.0 or laterdotnet add package Magick.NET-Q16-AnyCPU --version 14.12.0
NuGet
Update Magick.NET-Q8-AnyCPU to 14.12.0 or laterdotnet add package Magick.NET-Q8-AnyCPU --version 14.12.0
NuGet
Update Magick.NET-Q8-x86 to 14.12.0 or laterdotnet add package Magick.NET-Q8-x86 --version 14.12.0
NuGet
Update Magick.NET-Q16-HDRI-x64 to 14.12.0 or laterdotnet add package Magick.NET-Q16-HDRI-x64 --version 14.12.0
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (16)
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| Magick.NET-Q8-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+54 more) | 14.12.0 |
| Magick.NET-Q16-OpenMP-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+106 more) | 14.12.0 |
| Magick.NET-Q16-OpenMP-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+54 more) | 14.12.0 |
| Magick.NET-Q8-OpenMP-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+106 more) | 14.12.0 |
| Magick.NET-Q8-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+225 more) | 14.12.0 |
| Magick.NET-Q8-OpenMP-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+54 more) | 14.12.0 |
| Magick.NET-Q16-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+225 more) | 14.12.0 |
| Magick.NET-Q16-HDRI-AnyCPU | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+206 more) | 14.12.0 |
| Magick.NET-Q16-HDRI-OpenMP-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+54 more) | 14.12.0 |
| Magick.NET-Q16-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+54 more) | 14.12.0 |
| Magick.NET-Q16-HDRI-x86 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+206 more) | 14.12.0 |
| Magick.NET-Q16-x86 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+225 more) | 14.12.0 |
| Magick.NET-Q16-AnyCPU | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+209 more) | 14.12.0 |
| Magick.NET-Q8-AnyCPU | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+209 more) | 14.12.0 |
| Magick.NET-Q8-x86 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+225 more) | 14.12.0 |
| Magick.NET-Q16-HDRI-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+206 more) | 14.12.0 |
Vulnerability Classification
Common Weakness Enumeration (CWE) identifiers for this vulnerability type.
- CWE-122
- CWE-787Out-of-bounds WriteMITRE
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 5.5 score means for each attack dimension.
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-pwg5-6jfc-crvhWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-40310ADVISORY
- https://github.com/ImageMagick/ImageMagick/commit/3d653bea2df085c728a1c8f775808e1e9249dff9WEB
- https://github.com/ImageMagick/ImageMagickPACKAGE
- https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19WEB
- https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0WEB
Frequently Asked Questions
- What is CVE-2026-40310?
- ImageMagick has a heap out-of-bounds write in JP2 encoder This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 5.5/10).
- How do I check if my project is affected by CVE-2026-40310?
- CVE-2026-40310 affects Magick.NET-Q8-arm64, Magick.NET-Q16-OpenMP-x64 and Magick.NET-Q16-OpenMP-arm64 (and 13 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-40310 and 200,000+ other known vulnerabilities.
Severity & Exploitability
CVSS Score
5.5
Exploitation requires specific conditions or has limited impact. Remediate within weeks.
Also Known As
GHSA-pwg5-6jfc-crvh
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